On Sävö it is possible to live very close to the nature, sleep in the open air shelter or put up a tent. On the northern part of the island there are two cosy cottages for rent, both of them at a very basic standard – Boholmsviken och Lägerplatsen. If you are looking for a bit higher standard try the rooms at the guesthouse at Sävö gård.
You can also check in at the hostel on the island. It is part of Hostelling International.